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CHAPTER 17 INTERRUPT/EXCEPTION PROCESSING FUNCTION
17.1 Overview
The V850ES/KE1+ is provided with a dedicated interrupt controller (INTC) for interrupt servicing and realize an
interrupt function that can service interrupt requests from a total of 35 or 36 sources.
An interrupt is an event that occurs independently of program execution, and an exception is an event whose
occurrence is dependent on program execution.
The V850ES/KE1+ can process interrupt requests from the on-chip peripheral hardware and external sources.
Moreover, exception processing can be started by the TRAP instruction (software exception) or by generation of an
exception event (fetching of an illegal opcode) (exception trap).
17.1.1 Features
Interrupt Source
Interrupt
Non-maskable
function
interrupt
Maskable interrupt
Exception
Software exception
function
Exception trap
μ
Note Only in the
PD703302Y, 70F3302Y
Table 17-1 lists the interrupt/exception sources.
External
1 channel (NMI pin)
Internal
2 channels (WDT1, WDT2)
External
8 channels (all edge detection interrupts)
Internal
WDT1
1 channel
TMP
3 channels
TM0
2 channels
TMH
2 channels
TM5
2 channels
WT
2 channels
BRG
1 channel
UART
6 channels
CSI0
2 channels
IIC
1 channel
KR
1 channel
AD
1 channel
LVI
1 channel
Total
25 channels
16 channels (TRAP00H to TRAP0FH)
16 channels (TRAP10H to TRAP1FH)
2 channels (ILGOP/DBG0)
User's Manual U16896EJ2V0UD
V850ES/KE1+
Note
531
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